/*
- Copyright (C) 2009 Paul Davis
+ Copyright (C) 2009 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
*/
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
+#include <stdexcept>
+
+#include <jack/weakjack.h> // so that we can test for new functions at runtime
+
+#include "pbd/error.h"
+#include "pbd/compose.h"
+
+#include "ardour/debug.h"
#include "ardour/port.h"
#include "ardour/audioengine.h"
#include "pbd/failed_constructor.h"
-#include "pbd/error.h"
-#include "pbd/compose.h"
-#include <stdexcept>
#include "i18n.h"
using namespace std;
using namespace ARDOUR;
+using namespace PBD;
AudioEngine* Port::_engine = 0;
-nframes_t Port::_port_offset = 0;
-nframes_t Port::_buffer_size = 0;
+bool Port::_connecting_blocked = false;
+pframes_t Port::_global_port_buffer_offset = 0;
+pframes_t Port::_cycle_nframes = 0;
/** @param n Port short name */
Port::Port (std::string const & n, DataType t, Flags f)
- : _last_monitor (false)
+ : _port_buffer_offset (0)
, _name (n)
, _flags (f)
+ , _last_monitor (false)
{
-
- /* Unfortunately we have to pass the DataType into this constructor so that we can
- create the right kind of JACK port; aside from this we'll use the virtual function type ()
- to establish type.
+ _private_playback_latency.min = 0;
+ _private_playback_latency.max = 0;
+ _private_capture_latency.min = 0;
+ _private_capture_latency.max = 0;
+
+ /* Unfortunately we have to pass the DataType into this constructor so that
+ we can create the right kind of JACK port; aside from this we'll use the
+ virtual function type () to establish type.
*/
assert (_name.find_first_of (':') == std::string::npos);
-
+
+ if (!_engine->connected()) {
+ throw failed_constructor ();
+ }
+
if ((_jack_port = jack_port_register (_engine->jack (), _name.c_str (), t.to_jack_type (), _flags, 0)) == 0) {
+ cerr << "Failed to register JACK port, reason is unknown from here\n";
throw failed_constructor ();
}
}
/** Port destructor */
Port::~Port ()
{
- jack_port_unregister (_engine->jack (), _jack_port);
+ if (_engine->jack ()) {
+ jack_port_unregister (_engine->jack (), _jack_port);
+ }
}
/** @return true if this port is connected to anything */
bool
Port::connected_to (std::string const & o) const
{
- return jack_port_connected_to (_jack_port, _engine->make_port_name_non_relative(o).c_str ());
+ if (!_engine->connected()) {
+ /* in some senses, this answer isn't the right one all the time,
+ because we know about our connections and will re-establish
+ them when we reconnect to JACK.
+ */
+ return false;
+ }
+
+ return jack_port_connected_to (_jack_port,
+ _engine->make_port_name_non_relative(o).c_str ());
}
/** @param o Filled in with port full names of ports that we are connected to */
{
int n = 0;
- const char** jc = jack_port_get_connections (_jack_port);
- if (jc) {
- for (int i = 0; jc[i]; ++i) {
- c.push_back (jc[i]);
- ++n;
+ if (_engine->connected()) {
+ const char** jc = jack_port_get_connections (_jack_port);
+ if (jc) {
+ for (int i = 0; jc[i]; ++i) {
+ c.push_back (jc[i]);
+ ++n;
+ }
+
+ if (jack_free) {
+ jack_free (jc);
+ } else {
+ free (jc);
+ }
}
}
-
+
return n;
}
int
Port::connect (std::string const & other)
{
- /* caller must hold process lock */
-
std::string const other_shrt = _engine->make_port_name_non_relative (other);
std::string const this_shrt = _engine->make_port_name_non_relative (_name);
int r = 0;
-
+
+ if (_connecting_blocked) {
+ return r;
+ }
+
if (sends_output ()) {
r = jack_connect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
} else {
r = jack_connect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str());
}
-
+
if (r == 0) {
_connections.insert (other);
}
int
Port::disconnect (std::string const & other)
{
- /* caller must hold process lock */
-
std::string const other_shrt = _engine->make_port_name_non_relative (other);
std::string const this_shrt = _engine->make_port_name_non_relative (_name);
int r = 0;
-
+
if (sends_output ()) {
r = jack_disconnect (_engine->jack (), this_shrt.c_str (), other_shrt.c_str ());
} else {
r = jack_disconnect (_engine->jack (), other_shrt.c_str (), this_shrt.c_str ());
}
-
+
if (r == 0) {
_connections.erase (other);
}
-
-return r;
+
+ return r;
}
Port::reset ()
{
_last_monitor = false;
+}
- // XXX
- // _metering = 0;
- // reset_meters ();
+void
+Port::cycle_start (pframes_t)
+{
+ _port_buffer_offset = 0;
+}
+
+void
+Port::increment_port_buffer_offset (pframes_t nframes)
+{
+ _port_buffer_offset += nframes;
}
void
-Port::recompute_total_latency () const
+Port::set_public_latency_range (jack_latency_range_t& range, bool playback) const
+{
+ /* this sets the visible latency that the rest of JACK sees. because we do latency
+ compensation, all (most) of our visible port latency values are identical.
+ */
+
+ if (!jack_port_set_latency_range) {
+ return;
+ }
+
+ DEBUG_TRACE (DEBUG::Latency,
+ string_compose ("SET PORT %1 %4 PUBLIC latency now [%2 - %3]\n",
+ name(), range.min, range.max,
+ (playback ? "PLAYBACK" : "CAPTURE")));;
+
+ jack_port_set_latency_range (_jack_port,
+ (playback ? JackPlaybackLatency : JackCaptureLatency),
+ &range);
+}
+
+void
+Port::set_private_latency_range (jack_latency_range_t& range, bool playback)
+{
+ if (playback) {
+ _private_playback_latency = range;
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "SET PORT %1 playback PRIVATE latency now [%2 - %3]\n",
+ name(),
+ _private_playback_latency.min,
+ _private_playback_latency.max));
+ } else {
+ _private_capture_latency = range;
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "SET PORT %1 capture PRIVATE latency now [%2 - %3]\n",
+ name(),
+ _private_capture_latency.min,
+ _private_capture_latency.max));
+ }
+
+ /* push to public (JACK) location so that everyone else can see it */
+
+ set_public_latency_range (range, playback);
+}
+
+const jack_latency_range_t&
+Port::private_latency_range (bool playback) const
{
-#ifdef HAVE_JACK_RECOMPUTE_LATENCY
- jack_recompute_total_latency (_engine->jack (), _jack_port);
-#endif
+ if (playback) {
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "GET PORT %1 playback PRIVATE latency now [%2 - %3]\n",
+ name(),
+ _private_playback_latency.min,
+ _private_playback_latency.max));
+ return _private_playback_latency;
+ } else {
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "GET PORT %1 capture PRIVATE latency now [%2 - %3]\n",
+ name(),
+ _private_playback_latency.min,
+ _private_playback_latency.max));
+ return _private_capture_latency;
+ }
}
-nframes_t
-Port::total_latency () const
+jack_latency_range_t
+Port::public_latency_range (bool /*playback*/) const
{
- return jack_port_get_total_latency (_engine->jack (), _jack_port);
+ jack_latency_range_t r;
+
+ jack_port_get_latency_range (_jack_port,
+ sends_output() ? JackPlaybackLatency : JackCaptureLatency,
+ &r);
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "GET PORT %1: %4 PUBLIC latency range %2 .. %3\n",
+ name(), r.min, r.max,
+ sends_output() ? "PLAYBACK" : "CAPTURE"));
+ return r;
+}
+
+void
+Port::get_connected_latency_range (jack_latency_range_t& range, bool playback) const
+{
+ if (!jack_port_get_latency_range) {
+ return;
+ }
+
+ vector<string> connections;
+ jack_client_t* jack = _engine->jack();
+
+ if (!jack) {
+ range.min = 0;
+ range.max = 0;
+ PBD::warning << _("get_connected_latency_range() called while disconnected from JACK") << endmsg;
+ return;
+ }
+
+ get_connections (connections);
+
+ if (!connections.empty()) {
+
+ range.min = ~((jack_nframes_t) 0);
+ range.max = 0;
+
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: %2 connections to check for latency range\n", name(), connections.size()));
+
+ for (vector<string>::const_iterator c = connections.begin();
+ c != connections.end(); ++c) {
+
+ jack_latency_range_t lr;
+
+ if (!AudioEngine::instance()->port_is_mine (*c)) {
+
+ /* port belongs to some other JACK client, use
+ * JACK to lookup its latency information.
+ */
+
+ jack_port_t* remote_port = jack_port_by_name (_engine->jack(), (*c).c_str());
+
+ if (remote_port) {
+ jack_port_get_latency_range (
+ remote_port,
+ (playback ? JackPlaybackLatency : JackCaptureLatency),
+ &lr);
+
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "\t%1 <-> %2 : latter has latency range %3 .. %4\n",
+ name(), *c, lr.min, lr.max));
+
+ range.min = min (range.min, lr.min);
+ range.max = max (range.max, lr.max);
+ }
+
+ } else {
+
+ /* port belongs to this instance of ardour,
+ so look up its latency information
+ internally, because our published/public
+ values already contain our plugin
+ latency compensation.
+ */
+
+ Port* remote_port = AudioEngine::instance()->get_port_by_name (*c);
+ if (remote_port) {
+ lr = remote_port->private_latency_range ((playback ? JackPlaybackLatency : JackCaptureLatency));
+ DEBUG_TRACE (DEBUG::Latency, string_compose (
+ "\t%1 <-LOCAL-> %2 : latter has latency range %3 .. %4\n",
+ name(), *c, lr.min, lr.max));
+
+ range.min = min (range.min, lr.min);
+ range.max = max (range.max, lr.max);
+ }
+ }
+ }
+
+ } else {
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: not connected to anything\n", name()));
+ range.min = 0;
+ range.max = 0;
+ }
+
+ DEBUG_TRACE (DEBUG::Latency, string_compose ("%1: final connected latency range [ %2 .. %3 ] \n", name(), range.min, range.max));
}
int
Port::reestablish ()
{
- cerr << "RE-REGISTER: " << _name.c_str() << endl;
- _jack_port = jack_port_register (_engine->jack(), _name.c_str(), type().to_jack_type(), _flags, 0);
+ jack_client_t* jack = _engine->jack();
+
+ if (!jack) {
+ return -1;
+ }
+
+ _jack_port = jack_port_register (jack, _name.c_str(), type().to_jack_type(), _flags, 0);
if (_jack_port == 0) {
PBD::error << string_compose (_("could not reregister %1"), _name) << endmsg;
int const r = jack_port_set_name (_jack_port, n.c_str());
if (r == 0) {
- _name = n;
+ _name = n;
}
return r;
jack_port_request_monitor (_jack_port, yn);
}
-void
-Port::set_latency (nframes_t n)
+bool
+Port::physically_connected () const
{
- jack_port_set_latency (_jack_port, n);
+ const char** jc = jack_port_get_connections (_jack_port);
+
+ if (jc) {
+ for (int i = 0; jc[i]; ++i) {
+
+ jack_port_t* port = jack_port_by_name (_engine->jack(), jc[i]);
+
+ if (port && (jack_port_flags (port) & JackPortIsPhysical)) {
+ if (jack_free) {
+ jack_free (jc);
+ } else {
+ free (jc);
+ }
+ return true;
+ }
+ }
+ if (jack_free) {
+ jack_free (jc);
+ } else {
+ free (jc);
+ }
+ }
+
+ return false;
}
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